Safe exhaust device for vasoactive medicine

Abstract

The utility model discloses a safe exhaust device for vasoactive medicine, and particularly relates to the field of medical instruments. The utility model provides a vasoactive medicine safety exhaust device, including needle cylinder, piston rod, U-shaped stopper, the front end of needle cylinder is equipped with the connector that is used for being connected with the infusion tube, the needle cylinder is equipped with the accommodation cavity, the piston rod is arranged in the accommodation cavity, the U-shaped stopper is equipped with the U-shaped stopper, and the U-shaped stopper is equipped with the U-shaped stopper. The U-shaped blocking piece is rotationally connected with the rear end of the needle cylinder and used for limiting the length of the portion, stretching out of the containing cavity, of the piston rod.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical apparatus and instruments, specifically relates to a blood vessel active medicine safety exhaust device. BACKGROUND

[0002] Blood vessel active medicine is one of the most used medicines in intensive care unit, and has irreplaceable and extremely important role in rescuing critical patients. From a large number of critical illness clinical treatment practice, such as heavy bleeding, severe trauma and infection, the development of critical patients to a certain stage often causes hemodynamic changes and microcirculation disorders, causes important organ blood perfusion deficiency, and seriously causes multiple organ dysfunction syndrome (MODS). In treatment, in addition to taking corresponding measures according to different causes and different stages, blood vessel active medicine is urgently needed to be applied to improve cardiovascular function and systemic microcirculation, maintain stable hemodynamics, so as to ensure the blood perfusion of important organ system.

[0003] At present, micro pump is used to control blood vessel active medicine into human body in clinic, and when blood vessel active medicine is injected, air exists in the infusion tube, therefore, the air in the infusion tube needs to be excluded first to prevent blood vessel active medicine from being injected into human body together with air, thereby causing certain harm to the patient's body, therefore, when using, medical staff needs to ensure that blood vessel active medicine flows from the inlet end of the infusion tube to the outlet end of the infusion tube, and a small amount of blood vessel active medicine flows out to ensure that the air in the infusion tube is exhausted, and then the infusion tube is connected with the patient, which not only increases the working strength of medical staff, but also wastes blood vessel active medicine. UTILIZABLE NEW CONTENT

[0004] The utility model aims at overcoming the above technical problem, and provides a blood vessel active medicine safety exhaust device.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme: a blood vessel active medicine safety exhaust device, including needle cylinder, piston rod, U type blocking piece, the front end of needle cylinder is equipped with the connecting head for being connected with infusion tube, needle cylinder is equipped with containing cavity, the piston rod is arranged in the containing cavity, the rear end of U type blocking piece is rotatably connected with needle cylinder and is used for limiting the length of piston rod that extends out of the containing cavity.

[0006] Further, the U-shaped blocking piece includes a blocking part and a connecting part, the connecting part includes two, and the two connecting parts are symmetrically arranged on both sides of the blocking part, wherein the connecting part is rotatably connected with the rear end of the needle cylinder.

[0007] Further, the blocking part is provided with a semicircular groove, wherein the radius of the semicircular groove is the same as the radius of the needle cylinder, and the piston rod includes a handle, and the radius of the handle is greater than the radius of the semicircular groove.

[0008] Further, the blocking part and the connecting part are provided with a telescopic mechanism.

[0009] Further, the telescopic mechanism comprises a telescopic hole, a telescopic shaft and a locking assembly, the telescopic hole is arranged on the connecting part, the telescopic shaft is arranged on both sides of the blocking part, and the locking assembly is arranged between the telescopic hole and the telescopic shaft.

[0010] Further, the locking assembly comprises a threaded hole and a locking bolt, the threaded hole is arranged on the connecting part and communicates with the telescopic hole, and the locking bolt is arranged on the threaded hole, wherein one end of the locking bolt abuts against the telescopic shaft.

[0011] Further, the connecting head comprises a main body part and a ring-shaped protruding part, the main body part is connected with the needle cylinder, and the ring-shaped protruding part is arranged at the front end of the main body part.

[0012] Further, the connecting head comprises a main body part and a ring-shaped protruding part, the main body part is connected with the needle cylinder, and the ring-shaped protruding part is arranged at the front end of the main body part.

[0013] Further, the connecting head comprises a main body part and a ring-shaped protruding part, the main body part is connected with the needle cylinder, and the ring-shaped protruding part is arranged at the front end of the main body part.

[0014] From the above description of the utility model, compared with the prior art, the blood vessel active drug safe exhaust device provided by the utility model has the following advantages: when it is necessary to remove the air in the infusion tube, the liquid outlet end of the infusion tube is connected with the connecting head, the micro pump controls the drug to flow into the infusion tube, so that the air and a small amount of drug in the infusion tube are discharged into the accommodating cavity of the needle cylinder, at this time, the piston rod is pushed out of the accommodating cavity until it hits the U-shaped blocking piece, when the piston rod is blocked by the U-shaped blocking piece, the micro pump will make a sound because it cannot continue to deliver the drug, thereby reminding the medical staff that the air in the infusion tube has been exhausted, avoiding the medical staff from needing to pay attention to whether the drug in the infusion tube flows to the liquid outlet end of the infusion tube at all times, reducing the working intensity of the medical staff, and at the same time, the drug flowing into the accommodating cavity can be reused, avoiding waste. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is an exploded view of the blood vessel active drug safe exhaust device.

[0016] Figure 2 is Figure 1 is an enlarged view of A in FIG.

[0017] Figure 3 is a schematic view of the telescopic mechanism in the maximum extension state.

[0018] Figure 4 The figure is a schematic view of the telescopic mechanism in the retracted state.

[0019] Figure 5 The figure is a schematic view of the U-shaped blocking piece in the storage state. DETAILED DESCRIPTION

[0020] The technical solutions in the utility model will be described clearly and completely below in combination with the drawings in the utility model embodiments. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor should belong to the protection scope of the utility model.

[0021] Referring to Figures 1-5 As shown in the figure, a vasoactive drug safe air exhaust device comprises a needle cylinder 1, a piston rod 2 and a U-shaped blocking piece 3. The front end of the needle cylinder 1 is provided with a connecting head 11 for connecting with an infusion tube. The needle cylinder 1 is provided with a containing cavity 12. The piston rod 2 is arranged in the containing cavity 12. The U-shaped blocking piece 3 is rotationally connected with the rear end of the needle cylinder 1 for limiting the length of the piston rod 2 extending out of the containing cavity 12, so as to prevent the piston rod 2 from separating from the containing cavity 12.

[0022] Specifically, when it is needed to exhaust the air in the infusion tube, the liquid outlet end of the infusion tube is connected with the connecting head 11. The micro pump controls the drug to flow into the infusion tube, so that the air and a small amount of drug in the infusion tube are exhausted into the containing cavity 12 of the needle cylinder 1. At this time, the piston rod 2 is pushed out of the containing cavity 12 until it hits the U-shaped blocking piece 3. When the piston rod 2 is blocked by the U-shaped blocking piece 3, the micro pump cannot continue to deliver the drug, which will make a sound, so as to remind the medical staff that the air in the infusion tube has been exhausted. This avoids the medical staff from needing to pay attention to whether the drug in the infusion tube flows to the liquid outlet end of the infusion tube at all times, reduces the working intensity of the medical staff, and the drug flowing into the containing cavity 12 can be reused, which avoids waste.

[0023] The U-shaped blocking piece 3 comprises a blocking part 31 and two connecting parts 32. The two connecting parts 32 are symmetrically arranged on the two sides of the blocking part 31. The connecting part 32 is rotationally connected with the rear end of the needle cylinder 1. When not in use, the U-shaped blocking piece 3 can be rotated to the front end of the needle cylinder 1, so as to reduce the space occupied by the vasoactive drug safe air exhaust device and facilitate storage.

[0024] The blocking part 31 is provided with a semicircular groove 311, wherein the radius of the semicircular groove 311 is the same as the radius of the needle cylinder 1, so that the U-shaped blocking piece 3 can be inverted on the needle cylinder 1, further reducing the space occupied by the vasoactive drug safety exhaust device, the piston rod 2 includes a rod handle 21, the radius of the rod handle 21 is greater than the radius of the semicircular groove 311, preventing the piston rod 2 from passing through the semicircular groove 311.

[0025] The blocking part 31 and the connecting part 32 are provided with a telescopic mechanism 4, which can control the length of the piston rod 2 extending out of the accommodating cavity 12.

[0026] The telescopic mechanism 4 includes a telescopic hole 41, a telescopic shaft 42, and a locking assembly 43, the telescopic hole 41 is arranged on the connecting part 32, the telescopic shaft 42 is arranged on both sides of the blocking part 31, the telescopic shaft 42 can retract or extend into the telescopic hole 41, the locking assembly 43 is arranged between the telescopic hole 41 and the telescopic shaft 42 for fixing the telescopic shaft 42 in the telescopic hole 41. Among them, the locking assembly 43 includes a threaded hole 431 and a locking bolt 432, the threaded hole 431 is arranged on the connecting part 32, the threaded hole 431 communicates with the telescopic hole 41, the locking bolt 432 is arranged on the threaded hole 431, one end of the locking bolt 432 abuts against the telescopic shaft 42, thereby fixing the telescopic shaft 42 in the telescopic hole 41.

[0027] The connecting head 11 includes a main body part 111 and an annular protruding part 112, the main body part 111 is connected with the needle cylinder 1, the annular protruding part 112 is arranged at the front end of the main body part 111, and the annular protruding part 112 is used for cooperating with the structure of the end part of the infusion tube to fix the end part of the infusion tube on the connecting head 11.

[0028] The vasoactive drug safety exhaust device is also provided with an adapter 5, the adapter 5 is connected with the connecting head 11, so that the vasoactive drug safety exhaust device can be connected with the liquid inlet end of the infusion tube, that is, the vasoactive drug safety exhaust device has the function of a syringe, and the drug in the needle cylinder 1 can be reused, avoiding waste.

[0029] Among them, the adapter 5 includes an adapter seat 51 and a needle 52, the needle 52 is arranged on the adapter seat 51, wherein the adapter seat 51 is provided with an adapter cavity 511, the side wall of the adapter cavity 511 is provided with a spiral lug for connecting with the annular protruding part 112.

[0030] The above are only some specific embodiments of the present application, but the design concept of the present application is not limited thereto, and any non-essential modification of the present application using this concept shall be deemed to infringe the protection scope of the present application.

Claims

1. A safety venting device for vasoactive drugs, characterized in that: The device includes a syringe, a piston rod, and a U-shaped stopper. The front end of the syringe is provided with a connector for connecting to an infusion tube. The syringe has a receiving cavity, and the piston rod is disposed in the receiving cavity. The U-shaped stopper is rotatably connected to the rear end of the syringe to limit the length of the piston rod extending out of the receiving cavity.

2. The vasoactive drug safety venting device according to claim 1, characterized in that: The U-shaped blocking component includes a blocking part and a connecting part. The connecting part includes two parts, which are symmetrically arranged on both sides of the blocking part. The connecting part is rotatably connected to the rear end of the syringe.

3. The vasoactive drug safety venting device according to claim 2, characterized in that: The blocking part is provided with a semi-circular groove, wherein the radius of the semi-circular groove is the same as the radius of the syringe, and the piston rod includes a handle, the radius of which is greater than the radius of the semi-circular groove.

4. The vasoactive drug safety venting device according to claim 3, characterized in that: A telescopic mechanism is provided between the blocking part and the connecting part.

5. The vasoactive drug safety venting device according to claim 4, characterized in that: The telescopic mechanism includes a telescopic hole, a telescopic shaft, and a locking assembly. The telescopic hole is disposed on the connecting part, the telescopic shaft is disposed on both sides of the blocking part, and the locking assembly is disposed between the telescopic hole and the telescopic shaft.

6. The vasoactive drug safety venting device according to claim 5, characterized in that: The locking assembly includes a threaded hole and a locking bolt. The threaded hole is disposed on the connecting part and communicates with the telescopic hole. The locking bolt is disposed on the threaded hole, wherein one end of the locking bolt abuts against the telescopic shaft.

7. The vasoactive drug safety venting device according to claim 6, characterized in that: The connector includes a main body and an annular protrusion. The main body is connected to the syringe, and the annular protrusion is located at the front end of the main body.

8. The vasoactive drug safety venting device according to claim 7, characterized in that: It also includes an adapter that connects to the connector.

9. The vasoactive drug safety venting device according to claim 8, characterized in that: The adapter includes an adapter base and a needle. The needle is disposed on the adapter base. The adapter base has an adapter cavity, and the side wall of the adapter cavity has a spiral protrusion for connecting with the annular protrusion.

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